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최선화 ( Choi Sun Hwa ),김호일 ( Kim Ho Il ),윤경섭 ( Yoon Kyung Seup ),이봉훈 ( Lee Bong Hun ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-
This study was carried out to investigate the effects of T-P concentrations in irrigation water on the growth, yield, and grain quality of rice. It acquire fundamental knowledges to set up irrigation water quality standards. The pot experiment was conducted with 5 treatments using irrigation waters. It consisted of various total phosphorus concentrations(control, I, 2, 5, 10mg/L) and replicated four times with randomized block design. The results of this study showed that as T-P concentrations in irrigation water increases, plant height tended to increase. Dry weight of rice plant at T-P 10mg/L was significantly higher than the control. However, T-P in irrigation water did not affect plant height, tiller number, plant dry weight, yield, and quality of rice.
최선화 ( Choi Sun-hwa ),김호일 ( Kim Ho-il ),윤경섭 ( Yoon Kyung-seup ),박종민 ( Park Jong-min ) 한국농공학회 2002 한국농공학회 학술대회초록집 Vol.2002 No.-
This study has been carried out to analized of long term changes of water quality with regard to main pollutant sources in agricultural reservoirs on the basis of data during 1996-2001. The major source was domestic wastewater(DWW) and water pollution by non-point sources(NPS) is increasing as time goes. It was determined that Seasonly average values of DWW were pH 7.6~8.7, COD 7.0~9.4, T-N 0.74~2.07, T-P 0.05~0.62, Live-stock wastewater(LWW) were pH 7.5~8.9, COD 5.5~9.8, T-N 0.57~1.91 , T-P 0.04~0.13, NPS were pH 7.1~8.3, COD 3.1~5.2, T-N 0.29~1.44, T-P 0.02~0.07. Fluctuation of DWW and LWW were very wide and variable long term patterns of them were similar. Trophic states by Carlson Index of DWW and LWW was classified as eutrophic to hypretrophic from chl-a, T-P concentration.
농업용수 수질기준 T-N 항목 설정을 위한 벼생육 실험
최선화,김호일,윤경섭,최이송,오종민 한국물환경학회 2004 한국물환경학회지 Vol.20 No.3
The present water quality standards for agricultural were established without considering the effects of water quality on the safety, growth, yield and quality of crops. This study was carried out to investigate the effects of irrigation water quality on the growth, yield, and grain quality of rice, and to acquire basic knowledges to set up water quality standards for irrigation. The field and pot experiments were conducted with irrigation water that was previously adjusted four concentrations (control, 5, 10, 20 ㎎/L) and six concentrations (control, 5, 10, 15, 20, 30 ㎎/L) by NH₄NO₃ solution and replicated three and four times with randomized block design, respectively. The results of this study showed that the inorganic nutrient of rice plant, rice protein contents and number of panicle tended to increase as the T-N concentration in irrigation water was increased. In addition, grain yield at T-N 10 ㎎/L and 20㎎/L were significantly higher than the control at the field experiment. From the pot experiment at T-N 30 ㎎/L, the percentage of head rice was slightly lower due to the increase of green kernel and white belly/core kernel.